Yes i do agree with you on dragon ball. It has a much better story line than dbz, and its more well written over all. The fights on dbz were extremely too long (goku vs frieza was over 20 ep). I love bleach as well but i dont like it more than yuyu hakusho. And luckily for me i skipped all the fillers on bleach. I didnt watch any of them. I usually skip filler episodes. Naruto is infamous for their filler episodes as well.
My wife introduced me to Yu Yu Hakusho we haven't had the opportunity to finish it yet. I think we're on EP 30 or something? It looks like an okay Anime so far.
I didn't skip the filler episodes of Bleach when they came out so, I've seen all of the filler at least once. I've also seen the entire Anime past Aizen's defeat. When I introduced my wife to Bleach she got angry with me for skipping all the filler. Then, I accidentally fell asleep and some filler played and when I woke up she was like, "Oh, okay so the filler has absolutely nothing to do with the main plot or really the show." and I said "Told ya" and she calmed down a bit XD.
The only filler that really had a small place in the main plot was the bout arc and the one where the Zanpaktou got a mind of their own and did something... idk I forget, I last watched the Bleach filler like 5 years ago.
Thing is, in Japan it's common for anime to be made while the source material they're adapting is still ongoing. This can lead to a *lot* of issues once the anime catches up to the source material, as the anime team is forced to compensate.
In some instances, we get shows where the anime team creates their own ending. In some cases, it works; for example, Trigun's anime was as well received as the original manga. In other instances, however, it doesn't; for example, the powers-that-be behind the .Hack franchise have reportedly disowned the .Hack//Legend anime because of how bad that turned out.
Then we get shows that decide to do filler until the source catches back up. This is where shows like Kenshin, Bleach, DBZ, and Naruto get their filler from. With Kenshin, this led to the infamous "Renegade Christian" arc that caused the entire show to get cancelled due to the public backlash.
There wasn't really much more to tell in the Rurouni Kenshin Anime anyway. I mean, yeah they could have went on and on and made a whole bunch of more fights and whatnot and covered his Marriage to Karou (Which I believe wasn't covered in the OVA's) but, I think a majority of Kenshin's story was told. Then the OVAs came out that told the entire story and laid Kenshin's life to a close in my opinion. If they ever continue the anime like I said, they should focus on his son and his life and let us see how much the two differed from each other. I'm actually really curious how his life turned out.
Instead of making 3 live action movies based on the OVA's that only did moderately well in Japan. It was interesting to see the OVA's on the big screen but I feel like, Kenshin's era is over and the new era needs to begin if Japan ever decides to touch the series again.
As for .hack I never read the manga so, I never could compare the Anime to the manga. But, I did like a majority of the .hack OVA's and have seen some of the anime.
Speaking of plenty of filler, Detective Conan is getting up there with the most filler episodes ever. It's also starting to become the longest Anime of all time, I mean It's longer than One Piece and the Original Naruto put together and they haven't even remotely caught up to the manga. I mean, I forsee it becoming well over 1,000 episodes, we're on like EP 808 now and not even remotely close to an ending.
I've been watching Detective Conan for a long, long time now. I want closure! XD. I really wish Detective Conan was like Gossick. One really great Anime that can be told in like 26 episodes. Or even 300 episodes... a majority of Detective Conan is just filler. At least the filler is somewhat interesting...